package collection;

import java.util.ArrayList;
import java.util.Collection;

public class CollectionDemo4 {
    public static void main(String[] args) {
        Collection c1 = new ArrayList();
        c1.add("java");
        c1.add("c++");
        c1.add(".net");
        System.out.println("c1:" + c1);
        Collection c2 = new ArrayList();
        c2.add("ios");
        c2.add("androd");
        System.out.println("c2:" + c2);
        c1.addAll(c2);
        System.out.println("c1:" + c1);
        System.out.println("c2:" + c2);

        Collection c3 = new ArrayList();
        c3.add("ios");
        c3.add("java");
        System.out.println(c1.containsAll(c3)?"包含":"不包含");
        System.out.println(c3.contains("ios"));

//        System.out.println("c1:" + c1);
//        System.out.println("c3:" + c3);
//        c1.retainAll(c3);
//        System.out.println("c1:" + c1);
//        System.out.println("c3:" + c3);
        c1.addAll(c3);
        System.out.println(c1);

        c1.removeAll(c3);
        System.out.println(c1);


    }
}
